HOUSTON (AP) — A Texas-based group that had been embroiled in a legal fight over the use of drones in its searches for missing persons resumed using the unmanned aircraft on Wednesday, the first time it had done so after a favorable appeals court ruling earlier this month. The drone is being used to search an area overrun by tall grass and vegetation behind a motel in Livingston — located about 70 miles northeast of Houston — where the missing man's truck was found on Tuesday. The group had stopped using drones in its searches in February after it received what it described as an order in an email from the Federal Aviation Administration prohibiting the nonprofit organization from using the unmanned aircraft. Gene Robinson, who operated the drone on Wednesday and whose nonprofit RP Flight Systems Inc.